Abstract: The invention is used with a display (10) of a left and right stereoscopic images in adjacent side-by-side array on a two-dimensional imaging surface such as the screen of a computer monitor or television. The left and right images (L and R) are rotated by 90 degrees in opposite directions from their normal upright orientations. A viewing device which includes a right pair of mirrors (2 and 4) and a left pair of mirrors (1 and 3) is placed between the viewer and the display. The mirrors are oriented at fixed and predetermined angular relationship to deflect the lines of sight from the viewer's eyes to the respective right and left images, and to rotate them by 90 degrees. As a result, the users left and right eyes see upright versions of the left and right images, respectively, creating a wide-field stereoscopic illusion of the images.